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SEGMENT AND GEOGRAPHICAL INFORMATION (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
segment
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Segment Reporting Information [Line Items]      
Number of operating segments | segment 1    
Number of reportable segments | segment 1    
Number of reporting units | segment 2    
Revenue $ 161,142 $ 115,095  
Property, plant and equipment, net 41,638   $ 42,242
India      
Segment Reporting Information [Line Items]      
Revenue 27,346 32,934  
Property, plant and equipment, net 12,442   13,287
Middle East      
Segment Reporting Information [Line Items]      
Revenue 31,118 32,248  
Property, plant and equipment, net 5,983   6,507
Malaysia      
Segment Reporting Information [Line Items]      
Revenue 17,079 14,490  
Property, plant and equipment, net 5,093   5,058
Argentina      
Segment Reporting Information [Line Items]      
Revenue 11,111 16,344  
Property, plant and equipment, net 1,277   1,341
United States      
Segment Reporting Information [Line Items]      
Revenue 29,744 0  
Property, plant and equipment, net 5,341   5,349
Australia      
Segment Reporting Information [Line Items]      
Revenue 7,356 9,809  
Property, plant and equipment, net 311   345
Philippines      
Segment Reporting Information [Line Items]      
Revenue 12,809 0  
Property, plant and equipment, net 2,376   2,835
Rest of World      
Segment Reporting Information [Line Items]      
Revenue 24,579 $ 9,270  
Property, plant and equipment, net $ 8,815   $ 7,520